elf: Introduce __tls_init_tp for second-phase TCB initialization

TLS_INIT_TP is processor-specific, so it is not a good place to
put thread library initialization code (it would have to be repeated
for all CPUs).  Introduce __tls_init_tp as a separate function,
to be called immediately after TLS_INIT_TP.  Move the existing
stack list setup code for NPTL to this function.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index dfc117a445..67c6686015 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -1163,6 +1163,11 @@ extern void _dl_determine_tlsoffset (void) attribute_hidden;
    number of audit modules are loaded.  */
 void _dl_tls_static_surplus_init (size_t naudit) attribute_hidden;
 
+/* This function is called after processor-specific initialization of
+   the TCB and thread pointer via TLS_INIT_TP, to complete very early
+   initialization of the thread library.  */
+void __tls_init_tp (void) attribute_hidden;
+
 #ifndef SHARED
 /* Set up the TCB for statically linked applications.  This is called
    early during startup because we always use TLS (for errno and the